Geometry Unit 8

Interior Angles

100

What is the sum of the interior angles of a hexagon?

720°

200

What is the sum of the interior angles of a tetradecagon (14 sides)?

2160°

300

What is the sum of the interior angles of a 75-gon?

13140°

400

The measure of one interior angle of a regular polygon is 174°. How many sides does it have?

60 sides

500

The measure of one interior angle of a regular polygon is 170.27°. How many sides does it have?

37 sides

Exterior Angles

100

What is the sum of the exterior angles of a 1,274-gon?

360°

200

What is the measure of one exterior angle of a regular nonagon (9 sides)? 

40°

300

What is the measure of one exterior angle of a regular 33-gon?

10.91°

400

The measure of one exterior angle of a regular polygon is 11.612°. How many sides does it have?

31 sides

500

The measure of one exterior angle of a regular polygon is 5°. How many sides does it have?

72 sides

Area

100

See Slide 1

168 in²

200

See Slide 2

5460 ft²

300

See Slide 3

1496.5 cm²

400

See Slide 4

82.8 in²

500

See Slide 5

466.0mm²

Vocabulary

100

What is the name for a 7 sided polygon?

Heptagon

200

What is the name for an 8 sided polygon?

Octagon

300

What is the name for a 10 sided polygon?

Decagon

400

What is the name for a 9 sides polygon?

Nonagon

500

What is the name for a 12 sided polygon?

Dodecagon